Can I ask a bit of a home theater question? Need a S/PDIF "splitter"...

[cvanc]

I have an optical Toslink output that I need to feed to *two* different destinations simultaneously. Both destinations only have coax/RCA S/PDIF inputs. So I need some little box with one optical input and two identical coax/RCA outputs.

Please note I do not want to convert to analog. I need digital in and digital out. Just need to convert from fiber to copper and have two outputs instead of one.

Anyone know of such a thing? I'd hate to daisy-chain several adapters to do such a simple task, but I am not finding what I need in any of the usual places (Monoprice, etc).

Thanks in advance for any help you can provide.

[jeroen79]

A google for 'toslink splitter' gives a lot of results.
They come as passive splitters where there are just multiple fibres coming out of the input.
And there are powered/active variants where the input is a phototransistor connected to a buffer IC which then drives the outputs which are leds.

[KhronX]

Are you looking to buy, or to DIY?

Since commercial converters seem to be, in most cases, 1-to-1, DIY might just be your best bet.

http://files.slashorg.net/dev/elec/digital1.htm

The 3rd schematic is what you want. Parallel the "a" and "b" buffers with the "d-e-f" ones, and use another 74HC04 in an identical fashion for the 2nd coax output.
You will, of course, need a 5v supply for the circuitry, as well as an optical receiver

[NiHaoMike]

Build it with some extra outputs. It costs next to nothing to do and helps future proof the adapter.

[cvanc]

As much fun as it'd be to roll my own solution, it's not an option.  I've got too many projects waiting in line already.  Really hoping to find an off the shelf answer.

Does anyone know if simply paralleling the two RCA cables will work?  I honestly don't know what impedances are involved with coax S/PDIF...

[KhronX]

Most likely you'd need at least three pieces of equipment (likely each with their own power supply / wall-wart).

Either some sort of optical splitter, and two toslink-to-coax converters, or just one of those plus a coax splitter/buffer.

Me, i'd rather just roll my own, but i'm biased

[cvanc]

Thanks all for the suggestions.  For the record I tried an RCA 'Y' cable and just paralleled the 2 loads.  Both destinations seem happy and sound fine to me.  (so much for impedance matching, eh?)